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Name: AP Physics C: Momentum, Impulse, Collisions and Center of Mass Review (Mechanics) Category: Momentum and Collisions Date Added: 2017-04-28 Submitter: Flipping Physics
Calculus based review of conservation of momentum, the momentum version of Newton’s second law, the Impulse-Momentum Theorem, impulse approximation, impact force, elastic, inelastic and perfectly inelastic collisions, position, velocity and acceleration of the center of mass of a system of particles, center of mass of a rigid object with shape, and volumetric, surface and linear mass densities. For the calculus based AP Physics C mechanics exam.
Want Lecture Notes?
Content Times:
0:11 Momentum
0:38 Momentum and Newton’s Second Law
1:44 Conservation of Momentum
2:35 Impulse-Momentum Theorem
4:23 Impulse Approximation and Force of Impact
5:32 Elastic, Inelastic, and Perfectly Inelastic Collisions
6:39 Position of the Center of Mass of a System of Particles
7:19 Velocity of the Center of Mass of a System of Particles
7:54 Acceleration of the Center of Mass of a System of Particles
8:31 Center of Mass of a Rigid Object with Shape
10:09 Volumetric, Surface, and Linear Mass Density
Multilingual? Please help translate Flipping Physics videos!
AP Physics C Review Website
Next Video: AP Physics C: Rotational Kinematics Review (Mechanics)
Previous Video: AP Physics C: Integrals in Kinematics Review (Mechanics)
Please support me on Patreon!
Thank you to Aarti Sangwan, Jordan Bueno, and Michael Nelson for being my Quality Control team for this video.
AP Physics C: Momentum, Impulse, Collisions and Center of Mass Review (Mechanics)

Calculus based review of conservation of momentum, the momentum version of Newton’s second law, the Impulse-Momentum Theorem, impulse approximation, impact force, elastic, inelastic and perfectly inelastic collisions, position, velocity and acceleration of the center of mass of a system of particles, center of mass of a rigid object with shape, and volumetric, surface and linear mass densities. For the calculus based AP Physics C mechanics exam.
Want Lecture Notes?
Content Times:
0:11 Momentum
0:38 Momentum and Newton’s Second Law
1:44 Conservation of Momentum
2:35 Impulse-Momentum Theorem
4:23 Impulse Approximation and Force of Impact
5:32 Elastic, Inelastic, and Perfectly Inelastic Collisions
6:39 Position of the Center of Mass of a System of Particles
7:19 Velocity of the Center of Mass of a System of Particles
7:54 Acceleration of the Center of Mass of a System of Particles
8:31 Center of Mass of a Rigid Object with Shape
10:09 Volumetric, Surface, and Linear Mass Density
Multilingual? Please help translate Flipping Physics videos!
AP Physics C Review Website
Next Video: AP Physics C: Rotational Kinematics Review (Mechanics)
Previous Video: AP Physics C: Integrals in Kinematics Review (Mechanics)
Please support me on Patreon!
Thank you to Aarti Sangwan, Jordan Bueno, and Michael Nelson for being my Quality Control team for this video.

By the time students learn about all the equations for mechanical energy, momentum, impulse and impact force, they often start to confuse the equations with one another. This is a straightforward, simple look at all of those equations and when to use them.
This is an AP Physics 1 Topic. Want Lecture Notes?
Content Times:
0:14 Tacky Sweater Day!
0:22 Conservation of Mechanical Energy
0:54 Work due to Friction equals Change in Mechanical Energy
1:30 Net Work equals change in Kinetic Energy
3:01 Conservation of Momentum does NOT require the work due to friction to be zero
3:28 The initial and final points when dealing with momentum are predetermined
3:56 Impulse does not equal Impact Force
Thank you to Sophie Jones and her family for letting me use six of their sweaters in this video!
Next Video: 2D Conservation of Momentum Example using Air Hockey Discs
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Impulse Comparison of Three Different Demonstrations
Please support me on Patreon!
Thank you to my Quality Control help: Christopher Becke, Scott Carter and Jennifer Larsen

Name: Review of Mechanical Energy and Momentum Equations and When To Use Them! Category: Momentum and Collisions Date Added: 2017-02-16 Submitter: Flipping Physics
By the time students learn about all the equations for mechanical energy, momentum, impulse and impact force, they often start to confuse the equations with one another. This is a straightforward, simple look at all of those equations and when to use them.
This is an AP Physics 1 Topic. Want Lecture Notes?
Content Times:
0:14 Tacky Sweater Day!
0:22 Conservation of Mechanical Energy
0:54 Work due to Friction equals Change in Mechanical Energy
1:30 Net Work equals change in Kinetic Energy
3:01 Conservation of Momentum does NOT require the work due to friction to be zero
3:28 The initial and final points when dealing with momentum are predetermined
3:56 Impulse does not equal Impact Force
Thank you to Sophie Jones and her family for letting me use six of their sweaters in this video!
Next Video: 2D Conservation of Momentum Example using Air Hockey Discs
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Impulse Comparison of Three Different Demonstrations
Please support me on Patreon!
Thank you to my Quality Control help: Christopher Becke, Scott Carter and Jennifer Larsen
Review of Mechanical Energy and Momentum Equations and When To Use Them!

A racquetball is dropped on to three different substances from the same height above each: water, soil, and wood. Rank the _______ during the collision with each substance in order from least to most. (a) Impulse. (b) Average Force of Impact. (Assume the racquetball stops during the collision with the water and soil.)
This is an AP Physics 1 Topic. Want Lecture Notes?
Content Times:
0:11 Prom Dress Day!
0:20 The three demonstrations
0:32 The problem
1:43 The equation for Impulse and Impact Force
2:02 Understanding the two parts to the demonstrations
3:33 Part (a): Impulse [water and soil]
4:47 Part (a): Impulse [wood]
5:23 Part (b): Impact Force [water and soil]
6:27 Part (b): Impact Force [wood]
7:59 The Ann Arbor Prom Dress Project
Thank you to Jan Wery and Judi Lintott of the Ann Arbor Prom Dress Project: “Find your dream dress for less than $25."
Next Video: Review of Mechanical Energy and Momentum Equations and When To Use Them!
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Using Impulse to Calculate Initial Height
Please support me on Patreon!
Thank you to my Quality Control help: Scott Carter and Jennifer Larsen

Name: Impulse Comparison of Three Different Demonstrations Category: Momentum and Collisions Date Added: 2017-02-09 Submitter: Flipping Physics
A racquetball is dropped on to three different substances from the same height above each: water, soil, and wood. Rank the _______ during the collision with each substance in order from least to most. (a) Impulse. (b) Average Force of Impact. (Assume the racquetball stops during the collision with the water and soil.)
This is an AP Physics 1 Topic. Want Lecture Notes?
Content Times:
0:11 Prom Dress Day!
0:20 The three demonstrations
0:32 The problem
1:43 The equation for Impulse and Impact Force
2:02 Understanding the two parts to the demonstrations
3:33 Part (a): Impulse [water and soil]
4:47 Part (a): Impulse [wood]
5:23 Part (b): Impact Force [water and soil]
6:27 Part (b): Impact Force [wood]
7:59 The Ann Arbor Prom Dress Project
Thank you to Jan Wery and Judi Lintott of the Ann Arbor Prom Dress Project: “Find your dream dress for less than $25."
Next Video: Review of Mechanical Energy and Momentum Equations and When To Use Them!
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Using Impulse to Calculate Initial Height
Please support me on Patreon!
Thank you to my Quality Control help: Scott Carter and Jennifer Larsen
Impulse Comparison of Three Different Demonstrations

Name: Using Impulse to Calculate Initial Height Category: Momentum and Collisions Date Added: 2017-02-03 Submitter: Flipping Physics
A 66 g beanbag is dropped and stops upon impact with the ground. If the impulse measured during the collision is 0.33 N·s, from what height above the ground was the beanbag dropped?
This is an AP Physics 1 Topic. Want Lecture Notes?
Content Times:
0:12 Superhero Day!
0:56 The problem
1:39 Splitting the problem in to two parts
2:32 Using Impulse for part 2
3:30 Using Conservation of Energy for part 1
4:45 What went wrong?
Next Video: Impulse Comparison of Three Different Demonstrations
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Review of Momentum, Impact Force, and Impulse
Thanks to Adam Herz for letting me borrow a VHS copy of our high school video yearbook which he was instrumental in the creating of.
Please support me on Patreon!
Thank you to my Quality Control help: Christopher Becke and Jennifer Larsen
Using Impulse to Calculate Initial Height

A 66 g beanbag is dropped and stops upon impact with the ground. If the impulse measured during the collision is 0.33 N·s, from what height above the ground was the beanbag dropped?
This is an AP Physics 1 Topic. Want Lecture Notes?
Content Times:
0:12 Superhero Day!
0:56 The problem
1:39 Splitting the problem in to two parts
2:32 Using Impulse for part 2
3:30 Using Conservation of Energy for part 1
4:45 What went wrong?
Next Video: Impulse Comparison of Three Different Demonstrations
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Review of Momentum, Impact Force, and Impulse
Thanks to Adam Herz for letting me borrow a VHS copy of our high school video yearbook which he was instrumental in the creating of.
Please support me on Patreon!
Thank you to my Quality Control help: Christopher Becke and Jennifer Larsen

An important review highlighting differences between the equations for Conservation of Momentum, Impact Force and Impulse.
Want lecture notes? This is an AP Physics 1 Topic.
Content Times:
0:17 Conservation of Momentum
1:01 An explosion is a collision in reverse
1:22 Impact Force
1:39 Impulse
2:16 Impulse equals 3 things
2:53 How many objects are in these equations?
A big THANK YOU to Elle Konrad who let me borrow several of her old dance costumes!
Next Video: Using Impulse to Calculate Initial Height
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Demonstrating How Helmets Affect Impulse and Impact Force
Please support me on Patreon!
Thank you to my Quality Control help: Christopher Becke, Scott Carter and Jennifer Larsen

Name: Demonstrating How Helmets Affect Impulse and Impact Force Category: Momentum and Collisions Date Added: 2016-12-08 Submitter: Flipping Physics
Demonstrating and measuring how a helmet changes impulse, impact force and change in time during a collision.
Want lecture notes? This is an AP Physics 1 Topic.
Content Times:
0:21 The demonstration without a helmet
1:15 The equation for Impulse
1:55 How a helmet should affect the variables
2:36 The demonstration with a helmet
3:29 Comparing with and without a helmet
Next Video: Review of Momentum, Impact Force, and Impulse
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Demonstrating Impulse is Area Under the Curve
Please support me on Patreon!
Thank you to my Quality Control help: Christopher Becke, Scott Carter, and Jennifer Larsen
Demonstrating How Helmets Affect Impulse and Impact Force

Demonstrating and measuring how a helmet changes impulse, impact force and change in time during a collision.
Want lecture notes? This is an AP Physics 1 Topic.
Content Times:
0:21 The demonstration without a helmet
1:15 The equation for Impulse
1:55 How a helmet should affect the variables
2:36 The demonstration with a helmet
3:29 Comparing with and without a helmet
Next Video: Review of Momentum, Impact Force, and Impulse
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Demonstrating Impulse is Area Under the Curve
Please support me on Patreon!
Thank you to my Quality Control help: Christopher Becke, Scott Carter, and Jennifer Larsen

Know when and how to use the “Impulse Approximation”.
Want lecture notes?
This is an AP Physics 1 Topic.
Content Times:
0:12 Reviewing the examples
0:43 Defining Impulse Approximation
1:41 Determining the forces during the collision
2:27 Solving for the Force Normal (or Force of Impact)
3:12 Determining our error
Next Video: How to Wear A Helmet - A PSA from Flipping Physics
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Previous Video: Impulse Introduction or If You Don't Bend Your Knees When Stepping off a Wall
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Name: Impulse Introduction or If You Don't Bend Your Knees When Stepping off a Wall Category: Momentum and Collisions Date Added: 2016-09-22 Submitter: Flipping Physics
Now mr.p doesn’t bend his knees when stepping off a wall. What is the new force of impact?
Want lecture notes? This is an AP Physics 1 Topic.
Content Times:
0:18 How much does mr.p bend his knees?
1:00 Reviewing the previous problem
1:57 What changes if I don’t bend my knees?
2:41 Impulse introduction
3:36 The impulse during this collision
4:51 Why is it bad to not bend your knees?
5:22 Estimating time of collision if I don’t bend my knees
6:09 Solving for the force of impact
6:51 Review
7:28 No tomatoes were wasted in the making of this video
Next Video: Proving and Explaining Impulse Approximation
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Calculating the Force of Impact when Stepping off a Wall
Please support me on Patreon!
Impulse Introduction or If You Don't Bend Your Knees When Stepping off a Wall

Now mr.p doesn’t bend his knees when stepping off a wall. What is the new force of impact?
Want lecture notes? This is an AP Physics 1 Topic.
Content Times:
0:18 How much does mr.p bend his knees?
1:00 Reviewing the previous problem
1:57 What changes if I don’t bend my knees?
2:41 Impulse introduction
3:36 The impulse during this collision
4:51 Why is it bad to not bend your knees?
5:22 Estimating time of collision if I don’t bend my knees
6:09 Solving for the force of impact
6:51 Review
7:28 No tomatoes were wasted in the making of this video
Next Video: Proving and Explaining Impulse Approximation
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Calculating the Force of Impact when Stepping off a Wall
Please support me on Patreon!

Wearing a helmet is all about impulse, change in momentum and the force of impact. This video illustrates why you should secure your helmet to your head. Thank you very much to Colton and Jean Johnson who said yes when I asked them if I could film myself riding my bike off their dock. Colton also said, â€œIn my 75 years of living, that has got to be the strangest request I have ever received.â€ Thank you also to Chris Palmer and Larry Braak for being my on-site camera operators.
Content Times:
0:19 Are you wearing your helmet?
0:53 Riding my bike off the dock into the lake. :)
2:15 The helmet falls off
2:40 Newtonâ€™s 2nd Law
4:08 Impulse approximation
5:01 Which variables are NOT dependent on helmet status
6:23 Impulse
7:01 What variables does wearing a helmet change
7:57 This one time I was riding my bike â€¦
8:50 A contrasting story
Want [url="http://www.flippingphysics.com/helmet.html"]Lecture Notes[/url]?
Multilingual? Please help [url="http://www.flippingphysics.com/translate.html"]translate Flipping Physics videos[/url]!
More Flipping Physics Videos:
[url="http://www.flippingphysics.com/bullet.html"]The Classic Bullet Projectile Motion Experiment[/url]
&
[url="http://www.flippingphysics.com/dropping-dictionaries.html"]Dropping Dictionaries Doesnâ€™t Defy Gravity, Duh![/url]
[url="http://www.flippingphysics.com/give.html"]1Â¢/minute[/url]

Name: How to Wear a Helmet a PSA from Flipping Physics
Category: Momentum and Collisions
Date Added: 18 September 2014 - 03:36 PM
Submitter: Flipping Physics
Short Description: None Provided
Wearing a helmet is all about impulse, change in momentum and the force of impact. This video illustrates why you should secure your helmet to your head. Thank you very much to Colton and Jean Johnson who said yes when I asked them if I could film myself riding my bike off their dock. Colton also said, â€œIn my 75 years of living, that has got to be the strangest request I have ever received.â€ Thank you also to Chris Palmer and Larry Braak for being my on-site camera operators.
Content Times:
0:19 Are you wearing your helmet?
0:53 Riding my bike off the dock into the lake.
2:15 The helmet falls off
2:40 Newtonâ€™s 2nd Law
4:08 Impulse approximation
5:01 Which variables are NOT dependent on helmet status
6:23 Impulse
7:01 What variables does wearing a helmet change
7:57 This one time I was riding my bike â€¦
8:50 A contrasting story
Want Lecture Notes?
Multilingual? Please help translate Flipping Physics videos!
More Flipping Physics Videos:
The Classic Bullet Projectile Motion Experiment
&
Dropping Dictionaries Doesnâ€™t Defy Gravity, Duh!
1Â¢/minute
View Video

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